Window lock



Oct. 9, 1934. F. D. REYNOLDS WINDOW LOCK Filed July 28, 1952 HIIMWM A Av,

Patented Oct. 9, 1934 UNITED( STA-'rss PATENT "fessiers 1,976,579 n WINDOW LOCK Frederick D.. Reynolds, St. Louis, Mo.

Application July Z6, 1932, Serial No. 625,243 2 claims. (C1. 292-342) This invention relates to new and useful improvements in window locks, the objects of the invention being the provision of a lock which limits the opening movement of the lower or the upper window sash, or both, to a predetermined distance relatively to each other and which, when not in use, does not interfere Awith the normal operation of the window sash and does not detract from the appearance thereof.

Other objects of the invention are to provide a window sash lock which is so constructed that it cannot be tampered. with or the locking member thereof displaced from the outside, and which locking member can be easily inserted in its locking position or removedtherefrom by a person standing in the room.

Further objects of the invention are to provide a window sash lock comprising two members, one of which is fixed or permanently attached to the upper window sash but does not interfere with the movement of either window sash, and the other member is detachably seated in said fixed member and extends into the path of movement of the lower window sash and limits the movement thereof, said detachable member being in cooperative engagement with said fixed member and being held thereby against accidental or unauthorized removal.

Additional objects of the invention are to provide a window lock of. the class'described which can be economically manufactured and easily installed and which is highly eiiicient in performing its intended functions.

With these and other objects in View, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawing, in which- Figure 1 is a side elevational view of my improved window lock showing it in position with respect to the window sash.

Figure 2 is a front elevational View of same.

Figure 3 is an enlarged vertical cross section taken on line 3-3 of Figure 2.

Figure 4 is an enlarged perspective detail View of the fixed lock member. Y

Figure 5 is an lenlarged perspective detail view of the detachable lock member.

Referring by numerals to the accompanying drawing, 10 indicates a fragmental portion of an upper window sash, and 11 a portion of the lower window sash. A lock member 12 is carried by the upper sash and limits the relative movements of both the upper and lower window sash. This lock consists of two members 14 and 15.

Member 14 is permanently xed to the stile 16 of the upper sash in spaced relation with the lowerl sash 11. Member 15 is detachably mounted in member 14 and when in position therein projects in the path of movement ofthe lower sash and limits the movement thereof as indicated in dotted lines in Figures 1 and 2. It also limits or forms a stop for the downward movement of theV upper sash.

Fixedmember or plate 14 is preferably 'formed of a stamping of rectangular shape having a marginalflange 17 projecting outwardly ka suitable distance'. Thedepth of this ange is considerably less than the operating clearance "between the stiles of the two sashes so that the latter 'l The locking or detachable member 15 is eloni gated and is of substantially U-shape in cross section having a front wall 22 and side walls 23. Preferably side walls 23 are of triangular shape, y the member 15 tapering downwardly. The rear edges 24 of said sides 23 are disposed at right angles to the end edges 25 or the upper end of side member 14 so that said iront wall 23 inclines upwardly away from the upper sash and into the path of movement of the lower sash.

The lower end of member 1'5 terminates in a lip 26 which is formed integral with front wall 22 and extends therefrom substantially parallel with the edges 24.

When in use, the member 15 occupies the position sho-wn in Figures l to. 3 with the lip 26 inf serted in pocket 21 and with the square corners formed by edges 24 and 25 arranged adjacent to the upper flanged portion 17a. The angularly disposed wall 22 limits upward movement of the lower sash or downward movement of the upper sash. The locking member 15 is held against upward movement by flange 17a and is held against forward or tilting movement by lip 26 occupying pocket 21. This pocket is comparatively shallow and it does not permit tilting allow the upper end of said member to clear the ice iet

flange 17d. Thus the locking member 15 cannot be displaced from its position in member 14 Vaccidentally. However, this pocket 21 does permit angular movement of member 15 when the upper end of the latter isgrasped in the hand and moved slightly upwardly and'then outwardly. The'iiange 17 forms reinforcement for plate 14 and also acts as a guide for member 15, the width When member 15 is disengaged fromfmenb'er 14, the sash can be operated in the usual manner.v The lip or extension 26 is formed with an aperture 2'7 by means of which memberl, when not in use, can be suspended from a nail on the wall.A The location offixed member 14 relatively to sash l1 controls-the extent of movement Vof the latterwhen the locking member is in posi tion.

V.My lock is of strong and durable construction and cannot be Vforced ytopermitmovement .of the sash beyond its predetermined distance. It is formed of stampings and can be economically manufactured andl easily Vattached in position.

l1. A` window sash lock comprising in combination a ixed member ladaptedto be attached to an upper window sash, saidrxed Vmember having its upper end anged to provide a forwardly and horizontally-presented projection, a wedgeshaped locking member having a square upper end and having its lower end terminating in a downwardly presented lip, and means on said fixed member for engaging said lip and supporting said locking member in position with the inclined face presented upwardly and forwardly to engage the lower-window sash and limiting the upward movement thereof', Asaid projection on said xed member engaging the upper end of said locking member and preventing the upward movement of the latter, inV a vertical plane, said wedgeshaped member being manually tiltable forwardly into a position inclined from vertical ,to bring the square upper end thereof clear of said projection.

2. A window sash lock comprising a fixed member ,havingA its upper end and sides formed with VVforwardly presented flanges, means for securing it to a window sash, a vertically vdisposed upwardly yopening seat formed on said Xed member nearthe lower end-thereof, agwedge-shaped locking member having a square open upper end and having an upwardly and forwardly,v inclined front wall, an extension. formed integral with the lower end of said locking member and adapted to be inserted in. said seat and support said locking member in said xed member, saidwedge member being held by said flangesaganst movementvin vertical andy lateral planes, said/locking member being removable byv tilting the upper end 'thereof forwardly to clear said upper flange and then moving said locking memberupwardly.

V FREDERICK D. REYNOLDS. f 

